Hey all,

I’ve been letting other projects slip these last couple weeks because I was excited about converting dnscat into shellcode (or “weaponizing dnscat”, as I enjoy saying). Even though I got into the security field with reverse engineering and writing hacks for games, I have never written more than a couple lines of x86 at a time, nor have I ever written shellcode, so this was an awesome learning experience. Most people start by writing shellcode that spawns a local shell; I decided to start with shellcode that implements a dnscat client in under 1024 bytes (for both Linux and Windows). Like I always say, go big or go home!

This is going to be a fun post that’s related to some of my password work. Some of the text may not be PG13, so parental discretion is advised.

As most of you know, I’ve been collecting password lists. In addition to normal password lists that are useful in bruteforcing, I have a (so far) lame collection of non-hacking dictionaries. Things like cities, English words, etc.

There was a time when the biggest dictionary I had, weighing in at 6.4mb, was a German wordlist. 6.4mb doesn’t sound like much, but at the time I was on a DSL connection; with about 400kbit upstream (on a good day), I could feel every download.

Yes, I’m still working on making the ultimate password list. And I don’t mean the 16gb one I made by taking pretty much every word or word-looking string on the Internet when I was a kid; that was called ultimater dictionary. No; I mean one that is streamlined, sorted, and will make Nmap the bruteforce tool of the future!

My name is Matt Gardenghi. Ron seems to think it important that this post be clearly attributed to someone else (this fact might worry me). I’m an occasional contributor here (see: Bypassing AV). I handle security at Bob Jones University and also perform pentests on the side. (So if you need someone to do work, here’s my shameless plug.) I have acquired the oddly despised CISSP and the more respectable GCFA, GPEN, and GWAPT.

I know a company that purchased some Web 2.0 services.  We’ll leave it at that, to protect the guilty.  :-p

So, one day a bored user decided that the editor used on the site was annoying.  He used GreaseMonkey to replace the editor with his preferred editor.  This was “Clue #1” that a problem existed with the Web 2.0 service.

Hey,

I don’t usually write two posts in one day, but today is a special occasion! I was reading my news feeds (well, my co-op student (ie, intern) was – I was doing paperwork), and noticed a story about a remote backdoor being included with the Energizer UsbCharger software</a>. Too funny!

Hey everybody!

As you probably know, I’ve been working hard on generating and evaluating passwords. My last post was all about Rockyou.com’s passwords; next post will (probably) be about different groups of passwords from my just updated password dictionaries page. This will be a little different, though.

Hey all,

As some of you know, I’ve been working on collecting leaked passwords/other dictionaries. I spent some time this week updating my wiki’s password page. Check it out and let me know what I’m missing, and I’ll go ahead and mirror it.

I’ve had a couple new developments in my password list, though. Besides having an entirely new layout, I’ve added some really cool data!

Hey all,

I’m really excited to announce the first release of a tool I’ve put a lot of hard work into: dnscat.

It’s being released, along with a bunch of other tools that I’ll be blogging about, as part of nbtool 0.04.

Hey all,

Just a quick note – I updated my blog template a bit. On the right, I added some new links and I added some info about myself at the top. I also added “previous” and “next” links above the posts. Hopefully these changes make it easier to get around. Let me know if I broke anything in the process!

That’s all for today! Ron

Thanks to a Google Alert on my name, I recently found Laurent Gaffié’s blog post about MS10-006 (Microsoft Technet link).

Hey all,

I often find myself explaining to people how to install a script that isn’t included in Nmap. Rather than write it over and over, this is a quick tutorial.

Greetings!

If you were at Shmoocon this past weekend, you might remember a talk on Friday, done by Justin Morehouse and Tony Flick, on VMWare Guest Stealing. If you don’t, you probably started drinking too early. :)

This is just a quick thought I had at work today – actually, I had it in November, but just got around to posting it now. Common story, but eh?

Posts in this series (I’ll add links as they’re written):

1. What does smb-psexec do?
2. Sample configurations ("sample.lua")
3. <a href=/blog/?p=404'>Default configuration ("default.lua")</a>
4. Advanced configuration ("pwdump.lua" and "backdoor.lua")

Hey everybody,

I’m heading to Shmoocon on Feb 4 - 8, so two things:

a) Who wants to meet up? I have plans on the Saturday, but not much else yet.

b) Please don’t hack me while I’m gone. ;)

Posts in this series (I’ll add links as they’re written):

1. What does smb-psexec do?
2. Sample configurations ("sample.lua")
3. Default configuration ("default.lua")
4. Advanced configuration ("pwdump.lua" and "backdoor.lua")

Posts in this series (I’ll add links as they’re written):

1. What does smb-psexec do?
2. Sample configurations ("sample.lua")
3. Default configuration ("default.lua")
4. Advanced configuration ("pwdump.lua" and "backdoor.lua")

Greetings everybody!

I spent a good part of the past month traveling, which meant staying in several hotels, both planned and unplanned. There’s nothing like having a canceled flight and spending a boring night in San Francisco! But hey, why be bored when you have a packet sniffer installed? :)

Hey all,

Thanks for everybody who came out to my Toorcon talk! I had a great weekend, even the part where I got stuck in San Fransisco and spent two full days getting home. Oops :)

A couple people asked me if I’d put up my slides, so here you go: http://svn.skullsecurity.org:81/ron/security/2009-10-toorcon/2009-10%20Toorcon.pdf

(If you want the original OpenOffice format, directory listings are enabled on that server)

Thanks once again, and it was great to meet all of you!

This is just a quick shout out to Michel Chamberland over at the SecurityWire blog. He wrote a <a href=http://blog.securitywire.com/2009/10/10/nmap-nse-script-to-enumerate-iscsi-targets/>Script to enumerate iSCSI Targets</a>. Unfortunately, I don’t have any iSCSI to test on, but if you do he’d love to hear from you!

Ron